I had, 2 dwarf gouramis, 2 pearl gouramis and 2 kissing gouramis but I just got lucky!!! Basically... You'll have a biggest one which is a bully or worse, I was luck not to have any bullies. What size of tank do you have? If it was a 200 gal
with lots of cover I might take the risk of 6 or 4, I done it in a 48 gal
but as I said I got lucky. My two kissers only get nippy at feeding time but I don't mean taking chunks out of each other nippy.